Refraction - Refractive Index

  • Thread starter reyaz1
  • Start date
  • #1
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Homework Statement



A ray of light is incident in water on a plane water-glass boundary. The angle of incidence is 30 degrees. Calculate the angle of refraction. (Refractive index of glass with respect to air =3/2, refractive index of water with respect to air = 4/3).

Homework Equations



n1sini = n2sinr

The Attempt at a Solution



I tried approaching it with several methods, but I am puzzled. How do you get the glass to water refractive index from the data given??

Any help would be greatly appreciated. Thank you!
 

Answers and Replies

  • #2
ehild
Homework Helper
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Think of the definition of the refractive index.

ehild
 
  • #3
rl.bhat
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How do you get the glass to water refractive index from the data given??

It is not necessary to solve this problem.
You can use the relevant equation
n1sini = n2sinr
to find r. Here n1 is the refractive index of water. and n2 is that of glass.
 
  • #4
3
0
How do you get the glass to water refractive index from the data given??

It is not necessary to solve this problem.
You can use the relevant equation
n1sini = n2sinr
to find r. Here n1 is the refractive index of water. and n2 is that of glass.

Thank you sooo much! I just needed a nod in the right direction.
 

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